Here is the circuit..... What is the motor? - Electronic Circuits Projects Diagrams Free

b_reagle · 12th August 2008, 04:51 AM

I found this circuit and wanted to know what stepper motor I could use with it.. I do not know what motor(type) I am looking for. Thanks for any direction.

mneary · 12th August 2008, 05:02 AM

unipolar stepper
But you'll need drivers if the motor requires more than about 5 mA.

b_reagle · 12th August 2008, 05:12 AM

As I am sure most would. Would NPN transistors suffice as drivers?
Thank you.

b_reagle · 12th August 2008, 05:17 AM

Wow. Kinda pricey... Any suggestions on whare to find a used(salvaged) one? Any key features?
Thanks again.

b_reagle · 12th August 2008, 05:23 AM

Would this work??

http://www.recycledgoods.com/itemdet...roductID=26530

Mikebits · 12th August 2008, 05:48 AM

Although a unipolar requires a less complex circuit than a bipolar, it also is slower than its bipolar cousin, requires more windings of wire for same power as bipolar hence "Pricey"

Forget the simple circuit, look into some H-bridge driver chips and use a bipolar step motor.

b_reagle · 12th August 2008, 05:54 AM

Speed is not real a issue is it. 1/2 turn in 1/2 sec.??

b_reagle · 12th August 2008, 06:01 AM

When I very first started electronic's my instructor always said to use the K.I.S.S. rule.

Mikebits · 12th August 2008, 06:02 AM

Quote:

Originally Posted by b_reagle

Speed is not real a issue is it. 1/2 turn in 1/2 sec.??

Not really, but I would think price is. Bipolars are much more common and can be had at much more moderate cost

b_reagle · 12th August 2008, 06:06 AM

Quote:

Originally Posted by Mikebits

Bipolars are much more common and can be had at much more moderate cost

But the circuitry is more $$?

Boncuk · 12th August 2008, 06:16 AM

Quote:

Originally Posted by b_reagle

But the circuitry is more $$?

Yes, of course. Yours will be more $$ when finished.

That bit of circuit can not drive a stepper motor!

Use the outputs to control a stepper motor driver. There is no stepper motor which can be connected directly to the logic.

You can save $$ not connecting any motor to that circuit. The chips will fry right away.

Boncuk

b_reagle · 12th August 2008, 06:21 AM

I would have used transistors for drivers, but I will have to do more research on the matter. Do you have any links that would be helpful?

Boncuk · 12th August 2008, 08:56 AM

Quote:

Originally Posted by b_reagle

I would have used transistors for drivers, but I will have to do more research on the matter. Do you have any links that would be helpful?

Google "full H-bridges"

Boncuk

b_reagle · 12th August 2008, 02:55 PM

Is there no H-bridge driver chip that operates at 3vdc(min)?

b_reagle · 12th August 2008, 04:52 PM

Would this circuit work with 3 vdc?

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12th August 2008, 05:02 AM	(permalink)
mneary	unipolar stepper But you'll need drivers if the motor requires more than about 5 mA.

12th August 2008, 05:12 AM	(permalink)
b_reagle	As I am sure most would. Would NPN transistors suffice as drivers? Thank you. __________________ The thought is in the question; The information is in the anwser. Last edited by b_reagle; 12th August 2008 at 05:31 AM.

12th August 2008, 05:17 AM	(permalink)
b_reagle	Wow. Kinda pricey... Any suggestions on whare to find a used(salvaged) one? Any key features? Thanks again. __________________ The thought is in the question; The information is in the anwser.

12th August 2008, 05:23 AM	(permalink)
b_reagle	Would this work?? http://www.recycledgoods.com/itemdet...roductID=26530 __________________ The thought is in the question; The information is in the anwser.

12th August 2008, 05:48 AM	(permalink)
Mikebits	Although a unipolar requires a less complex circuit than a bipolar, it also is slower than its bipolar cousin, requires more windings of wire for same power as bipolar hence "Pricey" Forget the simple circuit, look into some H-bridge driver chips and use a bipolar step motor. __________________ Forget injuries, never forget kindnesses.

12th August 2008, 05:54 AM	(permalink)
b_reagle	Speed is not real a issue is it. 1/2 turn in 1/2 sec.?? __________________ The thought is in the question; The information is in the anwser.

12th August 2008, 06:01 AM	(permalink)
b_reagle	When I very first started electronic's my instructor always said to use the K.I.S.S. rule. __________________ The thought is in the question; The information is in the anwser. Last edited by b_reagle; 12th August 2008 at 06:05 AM.

12th August 2008, 06:21 AM	(permalink)
b_reagle	I would have used transistors for drivers, but I will have to do more research on the matter. Do you have any links that would be helpful? __________________ The thought is in the question; The information is in the anwser.

12th August 2008, 02:55 PM	(permalink)
b_reagle	Is there no H-bridge driver chip that operates at 3vdc(min)? __________________ The thought is in the question; The information is in the anwser.